Plz help me get the right answer

If square root x = -7, then x= -49 true or false

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Your weight on the moon is relative to your weight on earth. neil armstrong weighed 360 lbs. in his moon gear while on the earth, but on the moon he only weighed 60 lbs. how much would a 150 lb person weigh on the moon?